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Abstract Title:

Pterostilbene and its nicotinate derivative ameliorated vascular endothelial senescence and elicited endothelium-dependent relaxations via activation of Sirtuin 1.

Abstract Source:

Can J Physiol Pharmacol. 2021 Feb 2. Epub 2021 Feb 2. PMID: 33529089

Abstract Author(s):

Lili Zhang, Jianwei Zheng, Xin Tie, Tong Lin, Wanqi Yang, Ziqing Li, Yong Zou, Guimei Guan, Peiqing Liu, Wenwei Luo, Zhuoming Li

Article Affiliation:

Lili Zhang

Abstract:

AIM: Vascular endothelial cell senescence is a leading cause of age-associated diseases and cardiovascular diseases. Interventions and therapies targeting endothelial cell senescence and dysfunction would have important clinical implications. This study was aimed to evaluate the effect of 10 resveratrol analogues, including pterostilbene (Pts) and its derivatives, against endothelial senescence and dysfunction.

METHODS AND RESULTS: All the tested compounds at the concentrations from 10-9 M to 10-6 M did not show cytotoxicity in endothelial cells. Among the 10 resveratrol analogues, Pts and Pts nicotinate attenuated the expression of senescence-associatedβ-galactosidase, downregulated p21 and p53, and increased the production of NO in both angiotensin II and H2O2-induced endothelial senescence models. In addition, Pts and Pts nicotinate elicited endothelium-dependent relaxations. Pts and Pts nicotinate did not alter Sirtuin 1 (SIRT1) expression butenhanced its activity. Both Pts and Pts nicotinate have high binding activities with SIRT1. Inhibition of SIRT1 by sirtinol reversed the anti-senescent effects of Pts and Pts nicotinate.

CONCLUSIONS: This study suggests that the Pts and Pts nicotinate ameliorated vascular endothelial senescence and elicited endothelium-dependent relaxations via activation of SIRT1. These two compounds maybe potential drugs for the treatment of cardiovascular diseases related to endothelial senescence and dysfunction.

Study Type : In Vitro Study

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